 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.core.resources;

 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.Status;

 /**
  * A lock used to control write access to the resources in a workspace.
  * Clients may subclass.
  *
  * @see IWorkspace#setWorkspaceLock(WorkspaceLock)
  * @deprecated it is no longer possible to override the workspace lock behavior.
  * This functionality is now provided in the platform API by implementing the
  * org.eclipse.core.runtime.jobs.ILockListener interface.
  */
 public class WorkspaceLock {

     /**
      * Returns a new workspace lock.
      */
     public WorkspaceLock(IWorkspace workspace) throws CoreException {
         //thwart compiler warning
 if (false)
             throw new CoreException(Status.OK_STATUS);
     }

     /**
      * Attempts to acquire this lock. Callers will block indefinitely until this lock comes
      * available to them.
      * <p>
      * Clients may extend this method but should not otherwise call it.
      * </p>
      * @see #release()
      */
     public boolean acquire() throws InterruptedException {
         //thwart compiler warning
 if (false)
             throw new InterruptedException ();
         return false;
     }

     /**
      * Returns the thread that currently owns the workspace lock.
      */
     protected Thread getCurrentOperationThread() {
         //deprecated API
 return null;
     }

     /**
      * Releases this lock allowing others to acquire it.
      * <p>
      * Clients may extend this method but should not otherwise call it.
      * </p>
      * @see #acquire()
      */
     public void release() {
         //deprecated API
 }

     /**
      * Returns whether the workspace tree is locked
      * for resource changes.
      *
      * @return <code>true</code> if the tree is locked, otherwise
      * <code>false</code>
      */
     protected boolean isTreeLocked() {
         //deprecated API
 return true;
     }
 }

